Metallic hose.



PATENTED MAR. 26, 1907.

E. T. GREENPIELD. METALLIC HOSE.

APPLICATION FILED NOV.6,1905.

ATTORNEY UNITED STATES PATENT OFFICE METALLIC HOSE- Specification of Letters Patent.

Patented March 26, 1907.

Application filed November 6,1905. Serial No. 286.060.

To all whom it may concern.-

Be it known that I, EDWIN T. GREEN- FIELD, a citizen of the United States, residing at Kiamesha, in the county of Sullivan and State of New York, have invented certain new and useful Im rovements in Metallic Hose, of which the f lowing is a specification.

The invention concerns particularly a metallic structure capable of use not only for the transmission of a fluid agent such as water or steam, but also for the housing of electrical conductors, which may be loosely run therein or on the exterior of which such structure may be formed as armor.

The object is to provide a structure of this character which may be made impermeable by the fluid a ent used, which shall possess ample strengt to withstand the effect of continued use, and which may be easily, rapidly, and cheaply manufactured.

In carrying out the invention I employ a plurality of metallic strips to which prior to forming into final shape certain transyerse configuration is given by suitable means, such as dies.- One of these strips is formed into successive s irals havin circumferential flanges, and etween suc flan es, specially adapted to receive it, I provi e a suitable asket of any desired material, such as metaTlic wire or a wire having an elastic or compressible covering, such as textile fabric, asbestos, or the like. Another strip, preferably having a substantially U -shaped cross-section, is also formed into successive spirals over the circumferential flanges above referred to, and therefore inclosing the same and the gasket between the adjacent flanges, the spirals formed of this strip preferably serving as binders of the spirals 0 the firstnamed strip, although being, if desired, movable relatively thereto. The latter spirals, which may be formed of a metal having substantial resiliency, are movable toward and from each other, the degree of outward movement being, however, determined by the overlying spirals of the second strip. As

will be seen, a tube or hose so formed comrises few parts and may be readily manuactured at high speed by suitable mechanism-such, for example, as that set forth in Letters Patent No. 630,503 heretofore granted to me.

The invention is illustrated in the accompanying drawing, in which- Figure 1 is an elevation, partly in section, of a structure employing my invention. Fig.

2 is an enlarged sectional detail, and Fi s. 3 and 4 are enlarged perspective views 'lustrating sections of one of the strips of which the structure shown in the other figures is formed.

Referrin to the drawings, which illustrate a preferred embodiment. of the invention ada ted for use, for example, as a hose or con uit, as before stated, A designates the metallic strip of which the inner spirals are formed. This may be assed in' the flat between suitable dies and ongitudinally corrugated on lines equidistant from its center, as shown in Fi 3. The lateral edges of said strip, includlng the portions so corrugated,

are then turned upward at substantially right angles to the portion between them and the strip so formed passed through a suitable forming a paratus, whereby the same is bent or curve into successive spirals, the upturned sides a a forming circumferential flanges, the flange of one spiral being adjacent to and parallel with that of the adjoining spiral, t e inwardly-curved corrugation a of one flange being opposite the correspond ingly-curved corrugations of the adjacent and parallel flange. As-this operation proceedsa suitable gasket B (here shown as of wire covered with a compressible material) is fed between said adjacent flanges and received within the corru ations a 03. Also as the operation procee s a second strip C, preferab y previously given a U-shaped cross-section, as by suitable dies, is formed into a succession of outer spirals over the circumferential flanges a a each of these spirals having the sides a c and closed outer end 0' The extreme edges of said spirals'i. e., the open ends of the sides 0 c'will preferably bear against the outer surface of the body portions a of the spirals of the inner series, the extreme edges of the flanges a. a bearing against the closed ends of such outer s irals.

'Also .the sides 0 c of said outer spira s will contact, but permits the same to remain sepa-- rated by a suitable distance, so that in flexing the structure these flanges may move relativel to each other. Excess of movement,

whic might have a disrupting tendency, is.

precluded by the sides 0 c of the outer series IIO of flanges. ll, desired, in order to reduce the movement referred to the extreme edges of said sides may be turned slightly inward, as will be readily understood.

It will be obvious that in addition to the other advantages to which attention has been, called a structure such as that above described possesses ample flexibility to adapt it for the desired use, and this is obtained without sacrificing the element of strength and durability.

What I claim is 1. A series of metallic spirals having adjacent circumferential flanges, a asket between said flanges and means inc osing said adj acent flanges and sec'uring them'together, substantially' as described.

2. A series of metallic spirals having circumferential flanges adjacent but not in contact, a gasket between said flanges and means inclosing said adjacent flanges and securing them'and said gasket together, substantially as described.

3. A series of metallic s irals having circumferential flanges, a gas et between said flanges and another series of metallic s irals extending over said flanges, substantia ly as described.

4. A series of metallic spirals having circumferential flanges provided with corrugations, a gasket between said flan es and coacting w1th said corrugations an means inclosing said flanges and securing them together, substantially as described.

5. A series of metallic spirals having adj acent circumferential flanges, a gasket of compressible material between said flanges and means inclosing said flanges and securing them together, substantially as described.

6. A series of metallic s irals having adj acent, corrugated, circu erential flanges, a

seaaas gasket between said flanges and coacting with the corrugations thereof and another series of metallic s irals extending over said flanges, substantia ly as described.-

7. A series of metallic spirals having adjacent circumferential flanges, a gasket between said flanges and another series of metallic spirals extending over said flanges and holding the same together under pressure,

substantially as described.

8. A series of metallic spirals having adjacent corrugated, circumferential flanges, a gasket between said flanges and coacting with the corrugations thereof and another series of metallic spirals extending over said flanges and coacting with said corrugations to hold said flanges together, substantially as described.

9. A series of metallic spirals having radially-disposed non-overlapping flanges at the edges thereof, a gasket between said flanges, and means for securing said flanges together, substantially as set forth.

10. A series of metallic spirals having corrugated radially-disposed non-overlapping flanges at the edges thereof, a gasket between said flanges and entering the corrugations therein, and means for securing said flanges'together, substantially as set forth.

11. A series of metallic spirals having radially-disposed non-overlapping flanges at the edges thereof, a gasket between said flanges, and a second series of metallic spirals securing said flanges together, substantially as set forth.

This specification signed and witnessed this 3d day of November, 1905.

EDWIN T. GREENFIELD.

Witnesses:

S. O. EDMONDS, D. S. EDMoNDs. 

